hi,if you only get 5 channels then you are analogue. you will need to buy a set top box, cheapest in asda or tesco about �20 odd, better ones in currys etc, but they all do pretty much the same job, although some have a card slot for some pay as you view stations and extra scart connections. better check to see if you can receive digital first, go to the freeview website and put in your post code and they will tell you if you can or can't. also you may need an ariel upgrade, but if you receive channel five then normally you will be o.k..